16 July 2018
⇐20180715 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180717⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E04N56
(-41",736") 		E76-W85
(161) 		8.2 0.7 4.0e21
2 W10N13
(163",133") 		E01-W16
(17) 		2.1 1.8 7.3e20
3 E27S65
(-181",-881") 		E31-E17
(14) 		0.3 -1.0 -9.1e20
4 E65S11
(-838",-212") 		E72-E59
(13) 		0.1 -1.6 -3.8e20
5 W06S33
(87",-573") 		W03-W10
(7) 		0.1 -0.8 -3.5e19
6 W03S37
(39",-627") 		E00-W06
(6) 		0.1 -1.1 -4.3e19
7 W17S06
(267",-175") 		W16-W18
(2) 		0.1 2.7 3.8e19
8 W06N24
(91",315") 		W04-W08
(4) 		0.0 -0.9 -9.3e18

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 16-Jul-2018 23:10 UT .